5-22
5 Selecting Function
FVR-C11S-EN
5
Change during operation: X = impossible,
= possible (enabled by using
),
= possible (enabled by using
)
PID control
In PID control, an output frequency is adjusted to
a feedback value.
Use
to set a frequency and
to
make the feedback value and the reference value
equal.
Option selection
(RS485 communication)
: Option inactive
: Option active
Always set
when the optional RS485 se-
rial communication unit is not used. If
is
set, Er 8 occurs.
For explanations of "o01" to "o11", refer to
the instruction manual that comes with the
optional RS485 serial communication unit.
F 0 1
H 2 1
Kp
M
P
(1
1
s Ti
s Td)
⋅
+
-
+
⋅
+
⋅
FVR-C11S-EN
Deviation is positive and
frequency decreases.
Reference
frequency
PID arithmetic unit
Switching
between FWD
and REV
operation
Inverter
output
Deviation
Feedback value
(sensor)
Kp : P-gain
Td : Derivative time
Ti : Integral time
Forward
operation
Reverse
operation
Deviation
Output
frequency
Deviation
Output
frequency
Deviation is positive and
frequency increases.
o00
Factory setting
Change during
operation
0
0
1
0
1
